H. C. · H-O. · Hal C. Oberholzer II
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Fundamentals of math for Christian schools: Teacher's edition | 978-0-89084-859-3 (0-89084-859-9) | 1995 |
| Pre - Algebra: For Christian schools | 978-0-89084-762-6 (0-89084-762-2) | 1994 |
| Pre-algebra: For Christian schools: teacher's edition | 978-0-89084-791-6 (0-89084-791-6) | 1994 |